NDLI: Enhanced NO$_{2}$ gas-sensing properties of SnO$_{2}$ nanorods with a TiO$

Content Provider	Springer Nature Link
Author	Jin, Changhyun Ko, Taegyung Kim, Hyunsu Jeong, Bong Yong Lee, Chongmu Park, Sunghoon
Copyright Year	2012
Abstract	The influence of ZnO capping on the NO$_{2}$ gas-sensing properties of SnO$_{2}$ nanorods was examined. SnO$_{2}$-core/TiO$_{2}$-shell nanorods were fabricated by using a two-step process comprising the thermal evaporation of Sn powders and the metal-organic chemical-vapor deposition of TiO$_{2}$. The diameters of the SnO$_{2}$ nanorods ranged from a few tens to a few hundreds of nanometers, and the lengths were up to a few hundreds of micrometers. Transmission electron microscopy and X-ray diffraction showed that the cores and the shells of the nanorods were tetragonal-structured single crystal SnO$_{2}$ and amorphous TiO$_{2}$, respectively. Multiple networked SnO$_{2}$-core/TiO$_{2}$-shell nanorod sensors showed a response of 65.08% at NO$_{2}$ concentration of 50 ppm at 100 °C. The response of the SnO$_{2}$ nanorod sensors to 50-ppm NO$_{2}$ was increased 29 times when TiO$_{2}$ capping was used. This substantial improvement can be explained by using a space-charge model.
Starting Page	1370
Ending Page	1375
Page Count	6
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	61
Issue Number	9
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2012-11-16
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Response SnO$_{2}$ NO$_{2}$ Theoretical, Mathematical and Computational Physics TiO$_{2}$ Nanorods Physics Particle and Nuclear Physics Sensor
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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